/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.yixia.zi.widget.cropimage;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;

public class MonitoredActivity extends Activity {

	private final ArrayList<LifeCycleListener> mListeners = new ArrayList<LifeCycleListener>();

	public static interface LifeCycleListener {
		public void onActivityCreated(MonitoredActivity activity);

		public void onActivityDestroyed(MonitoredActivity activity);

		public void onActivityPaused(MonitoredActivity activity);

		public void onActivityResumed(MonitoredActivity activity);

		public void onActivityStarted(MonitoredActivity activity);

		public void onActivityStopped(MonitoredActivity activity);
	}

	public static class LifeCycleAdapter implements LifeCycleListener {
		public void onActivityCreated(MonitoredActivity activity) {
		}

		public void onActivityDestroyed(MonitoredActivity activity) {
		}

		public void onActivityPaused(MonitoredActivity activity) {
		}

		public void onActivityResumed(MonitoredActivity activity) {
		}

		public void onActivityStarted(MonitoredActivity activity) {
		}

		public void onActivityStopped(MonitoredActivity activity) {
		}
	}

	public void addLifeCycleListener(LifeCycleListener listener) {
		if (mListeners.contains(listener))
			return;
		mListeners.add(listener);
	}

	public void removeLifeCycleListener(LifeCycleListener listener) {
		mListeners.remove(listener);
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		for (LifeCycleListener listener : mListeners) {
			listener.onActivityCreated(this);
		}
	}

	@Override
	protected void onDestroy() {
		super.onDestroy();
		for (LifeCycleListener listener : mListeners) {
			listener.onActivityDestroyed(this);
		}
	}

	@Override
	protected void onStart() {
		super.onStart();
		for (LifeCycleListener listener : mListeners) {
			listener.onActivityStarted(this);
		}
	}

	@Override
	protected void onStop() {
		super.onStop();
		for (LifeCycleListener listener : mListeners) {
			listener.onActivityStopped(this);
		}
	}
}
